Double-acting wrench for flanges



Nov. 16, 1948. D. BAEZA DOUBLE ACTING WRENCH FOR FLANGES Fil ed Aug. 18, 1944 1 INVENTOR. .Parzz'e! Beeza Patented Nov. 16, 1948 U-N'ITED STATES PATENT" OFFICE 2 Claims. 1

This invention relates to new and useful improvements in a double acting wrenchfor flanges. The invention proposes a new andimproved-v double acting wrench which is characterized by a jaw shaped member having. top: and. bottomarms connected with a verticalback. It is pro.- posed. to mount a bottom socket upon, the bottomone of said armsfor engaging one; end of. a

bolt. and nut of a flange. It is proposed to provide atop socket for engaging the other end of said bolt and nut, and it is proposed to slidably and turnably mount a stem of said top socket through said top arm. It is furthermore proposed to provide a pressure arm slidably mounted on. said vertical back for engaging said top socket for urgin same downwards. It is contemplated to use a spring coaxially on said vertical back for urging said pressure arm and said bottom. ar-m resiliently towards each other.

The invention also contemplates a modified form provided with means for locking said pressure arm in various positions on. said vertical back.

Still further, the invention proposes the construction of a double acting wrench for flanges which is simple and durable and which can be manufactured and sold at a reasonable cost.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be bad to the following description and accompanying drawings, and to the appended claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawings forming a material part of this disclosure:

Fig. 1 is a side elevational view of a double acting wrench constructed in accordance with this invention, and shown engaged upon flanges.

Fig. 2 is a plan view of Fig. 1.

Fig. 3 is a horizontal sectional View taken on the line 33 of Fig. 1.

Fig. 4 is an enlarged fragmentary sectional view taken on the line 6-4 of Fig. 1.

Fig. 5 is a side elevational view of a double acting wrench for flanges constructed in accordance with a modified form of this invention and shown applied to a pair of flanges.

Fig. 6 is a fragmentary enlarged sectional view of a portion of Fig. 5.

The double acting wrench for flanges in accordance with the form of the invention disclosed in Figs. 1 to 3, includes a jaw shaped member having a top arm ill, a bottom arm II, and a vertical back l2 rigidly connected between and connecting said arms. The vertical back l2 is in the nature of a rod. The top and bottom arms l-lland H, respectively, are in the nature of rigid metal strips. A bottom socket l3 for engaging the bottom end of a bolt'or nut l4 engaged through the flange i5, is fixedl mounted on said bottom armv ll. This bottom socket I 3 is formed with inwardly projecting lugs 53 to prevent the bolt or nut I l from falling out of the socket, l3. A top socket l6 engages the other end of said belt or nut M, and is connected with a stem H which is slidably and. turnably mounted through said top arm ill. The stem H has a top head l8 which may be a ratchet arrangement through which a small handle or rod I-9 engages, by which the socket 56 may be turned. A pressure arm 2% is slidably mounted on said vertical back I2. A spring 22. coaxial on, the vertical arm I 2 urges said pressure arm 20 upwards. This spring 22 acts between the pressure arm 20 and the top arm Ill. The spring 22 also urges the vertical back l2 upwards, and so indirectly urges the bottom arm ll upwards. The top socket i6 is removably held upon the stem l! with a spring-pressed locking ball 23.

The operation of the double acting wrench is as follows:

The handle I!) may be gripped and turned for screwing down or screwing up, the nut, or the bolt of the bolt and nut l4. When the handle I9 is turned in one direction, the jaw shaped member consisting of the top and bottom arms 10 and l l, and the vertical back 52, will be swun in one direction across the edges of the flanges I5. The handle l9 will now transmit rotations to turn the nut while the socket l3 holds the bolt for turning.

When it is desired to remove the double acting wrench, it is merely necessary that the handle l9 be lifted upwards so as to raise the pressure arm 20, by compressing the spring 22. The bottom socket l3 may now be removed from the bottom end of the bolt and nut i 4.

In Figs. 5 and 6 a modified form of the invention has been disclosed which is similar to the prior form distinguishing merely in the fact that means is provided for lockin said pressure arm 20 in various positions on said vertical back l2. More specifically, the pressure arm 28 is provided with a boss 25 at its back end, through which the vertical back 12 freely passes. A bushing 26 is threadedly mounted in the bottom of the boss 25, coaxially of said vertical back l2. This bushing 26 has a tapered upper end 21 which is formed with slits 28 and which engages a complementary taper in said boss 25. When the bushing 26 is turned in one direction the taper 21 will be disengaged from the complementary taper of the boss 25. When the bushing 26 is turned in the other direction the taper 21 will be forced against the taper in the boss 25. Because of said slots 28 the top portion of said bushing 26 will be contacted and will grip the vertical back I2.

Another variation, in this form of the invention, resides in the arrangement of the bottom socket I3. This socket I3 has a coaxial bottom threaded portion 29. The bottom arm II has an upturned hexagonal end 30 upon which the hexagonal opening 29 has been engaged. The top socket I6 is removably held upon the stem H with a spring-pressed locking ball.

The operation of this form of the invention is the same as the prior form, distinguishing merely in the fact that the sockets I6 and I3 are exchangeable for other sockets, to adapt the double acting wrench for bolts and nuts of different sizes. Moreover, the pressure arm 20 may be locked in various positions upon said vertical back I2 so as to lock the pressure arm 20 in selected positions in relation to the bottom arm I i. This will prevent any possibility of the wrench slipping ofi the bolt and nut during the operation of tightening or loosening same.

While I have illustrated and described the preferred embodiments of my invention, it is to be understood that I do not limit myself to the precise constructions herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as defined in the appended claims.

Having thus described my invention, what I claim as new, and desire to secure by United States Letters Patent is:

1. A double acting wrench for flanges, comprising a jaw-shaped member having top and bottom arms connected with a vertical back, a bottom socket for engaging one end of a bolt or nut of a flange and fixedly mounted on said bottom arm, a top socket for engaging the other end of said bolt or nut and slidably and turnably mounted through said top arm, a pressure arm slidably mounted on said vertical back and engaging said top socket for urging said top socket downwards, a spring coaxially mounted on said vertical back and urging said pressure arm and said bottom arm towards each other, and means for locking said pressure arm in various positions on said vertical back, and including a bushing threadedly mounted upon said pressure arm coaxially of said rod and having a tapered portion engaging a complementary tapered portion on said pressure arm.

2. A double acting wrench for flanges, comprising a jaw-shaped member having top and bottom arms connected with a vertical back, a bottom socket for engaging one end of a bolt or nut of a flange and fixedly mounted on said bottom arm, a top socket for engaging the other end of said bolt or nut and slidably and turnably mounted through said top arm, a pressure arm slidably mounted on said vertical back and engaging said top socket for urging said top socket downwards, a spring coaxially mounted on said vertical back and urging said pressure arm and said bottom arm towards each other and including a bushing threadedly mounted upon said pressure arm coaxially of said rod and havin a tapered portion engaging a complementary tapered portion on said pressure arm, said top socket having a stem engaging through said top arm and provided with a head by which it may be turned.

DANIEL BAEZA.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,282,523 Bauer Oct. 22, 1918 1,338,549 Banta Apr. 27, 1920 1,426,682 Snell Aug. 22, 1922 1,426,847 Degener Aug. 22, 192 1,483,019 Smith et a1 Feb. 5, 1924 

